Override field values on Grafana Labs

About field overrides

Sat, 04 Apr 2026 12:26:57 +0000

About field overrides

Overrides allow you to change the settings for one or more fields. Field options for overrides are the same as the field options available in a particular visualization. The only difference is that you choose which fields to apply them to.

For example, you could change the number of decimal places shown in all numeric fields or columns by changing the Decimals option for Fields with type that matches Numeric.

Example 1: Format temperature

Let’s assume that our result set is a data frame that consists of two fields: time and temperature.

time	temperature
2020-01-02 03:04:00	45.0
2020-01-02 03:05:00	47.0
2020-01-02 03:06:00	48.0

Each field (column) of this structure can have field options applied that alter the way its values are displayed. This means that you can, for example, set the Unit to Temperature > Celsius, resulting in the following table:

time	temperature
2020-01-02 03:04:00	45.0 °C
2020-01-02 03:05:00	47.0 °C
2020-01-02 03:06:00	48.0 °C

In addition, the decimal place is not required, so we can remove it. You can change the Decimals from auto to zero (0), resulting in the following table:

time	temperature
2020-01-02 03:04:00	45 °C
2020-01-02 03:05:00	47 °C
2020-01-02 03:06:00	48 °C

Example 2: Format temperature and humidity

Let’s assume that our result set is a data frame that consists of four fields: time, high temp, low temp, and humidity.

time	high temp	low temp	humidity
2020-01-02 03:04:00	45.0	30.0	67
2020-01-02 03:05:00	47.0	34.0	68
2020-01-02 03:06:00	48.0	31.0	68

Let’s add the Celsius unit and get rid of the decimal place. This results in the following table:

time	high temp	low temp	humidity
2020-01-02 03:04:00	45 °C	30 °C	67 °C
2020-01-02 03:05:00	47 °C	34 °C	68 °C
2020-01-02 03:06:00	48 °C	31 °C	68 °C

The temperature fields look good, but the humidity must now be changed. We can fix this by applying a field option override to the humidity field and change the unit to Misc > percent (0-100).

time	high temp	low temp	humidity
2020-01-02 03:04:00	45 °C	30 °C	67%
2020-01-02 03:05:00	47 °C	34 °C	68%
2020-01-02 03:06:00	48 °C	31 °C	68%

View field overrides

Sat, 04 Apr 2026 12:26:57 +0000

View field overrides

You can view field overrides in the panel display options.

Before you begin

To view field overrides:

Open for edit the panel that contains the overrides you want to view.
In the panel display options, click the Overrides tab.

The override settings that appear on the All tab are the same as the settings that appear on the Overrides tab.

Add a field override

Sat, 04 Apr 2026 12:26:57 +0000

Add a field override

You can override a field when you want to change the display of the value in the visualization.

Before you begin

Add a panel to a dashboard.

To add a field override:

Edit the panel to which you want to add an override.
In the panel display options, in the Overrides section, click Add field override.
Select which fields an override rule will be applied to:
- Fields with name - Select a field from the list of all available fields. Properties you add to a rule with this selector are only applied to this single field.
- Fields with name matching regex - Specify fields to override with a regular expression. Properties you add to a rule with this selector are applied to all fields where the field name match the regex.
- Fields with type - Select fields by type, such as string, numeric, and so on. Properties you add to a rule with this selector are applied to all fields that match the selected type.
- Fields returned by query - Select all fields returned by a specific query, such as A, B, or C. Properties you add to a rule with this selector are applied to all fields returned by the selected query.
Click Add override property.
Select the field option that you want to apply.
Enter options by adding values in the fields. To return options to default values, delete the white text in the fields.
Continue to add overrides to this field by clicking Add override property, or you can click Add override and select a different field to add overrides to.
When finished, click Save to save all panel edits to the dashboard.

Edit a field overrides

Sat, 04 Apr 2026 12:26:57 +0000

Edit a field override

Edit a field override when you want to make changes to an override setting.

Before you begin

To edit a field override:

Edit the panel that contains the overrides you want to edit.
In the panel display options, click the Overrides tab.
Locate the override that you want to change.
Perform any of the following:
- Edit settings on existing overrides or field selection parameters.
- Delete existing override properties by clicking the X next to the property.
- Add an override properties by clicking Add override property.

Delete a field override

Sat, 04 Apr 2026 12:26:57 +0000

Delete a field override

Delete a field override when you no longer need it.

When you delete an override, the appearance of value defaults to its original format. This change impacts dashboards and dashboard users that rely on an affected panel.

Before you begin

To delete a field override:

Edit the panel that contains the override you want to delete.
In panel display options, click the Overrides tab.
Click the override you want to delete and then click the associated trash icon.